I recently bought tix on JetBlue, LGA to MCO, and while I was looking at prices and schedules, I saw a $48 flight from EWR to MCO for my same departure date, in May. It was an evening flight, btw. Despite the tempting fare, I didn't take it, for a lot of reasons, but mainly because it's far easier for me to fly out of LGA. I wanted to mention this, though, because I cannot imagine a fare cheaper than $48 from the NYC area to Orlando. At least not in 2018.
JetBlue has flash fares (you have to sign up on Twitter) and also many sales. Just get on their regular email mailing list.